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原文传递 Manual for the Computation of the Disaggregate County-Level Truck Flows and Explanation of Model Calibration.

题名：	Manual for the Computation of the Disaggregate County-Level Truck Flows and Explanation of Model Calibration.
作者：	hodges, m. prozzi, j. perez-ordonez, a.
关键词：	manuals, models, calibration, transportation planning, calculations, texas
摘要：	Truck data is critical to transportation planning in any region. Inter-city and interstate truck flows have an important impact on traffic volumes, the mix of traffic, and experienced level of congestion on the state-maintained infrastructure. In Technical Report 0-4713-R1 entitled Development of Sources and Methods for Securing Truck Travel Data in Texas, a multinomial logit approach was proposed to estimate county level truck travel data from the publicly available 1997 Commodity Flow Survey (CFS) and IMPLAN data over the short term. Although not a required research product, the modeling approach was considered very useful to TxDOT. The objective of this manual is to explain how to use the calibrated multinomial logit (MNL) models to generate disaggregate county-level truck flows for Texas and to present a detailed explanation of the required steps to calibrate the MNL models in the future. / Supplementary Notes: See also PB2007-110179. Sponsored by Texas Dept. of Transportation, Austin. Research and Technology Implementation Office. and Federal Highway Administration, Austin, TX. Texas Div. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
报告类型：	科技报告